I guess nobody’s saying you couldn’t do something this way.
You should just consider that it’ll collide with other naming schemas used by others – there’s the users who will place all kind of information in square brackets, there’s the users who run their season/episode complex as a single 3+ digit number (last 2 digits representing the episode, preceding digits representing the season).
I’m sure there’s the 0.01% of users who might be interested in digging up their own regular expressions. I’m just not sure why to break / complicate things for the rest. At some point you need to establish a schema that works for the majority of users, not just 1-2 users who happen to like their names differently (no offense… I like tinkering around too, occasionally).
As Volts summarized it… it’s file names; I don’t need them to be esthetic/beautiful… and to be fair… Vikings [S06] 01 isn’t necessarily a beauty too, is it?
There’s already a whole bunch of feature suggestions addressing this in their own way (see below) – down to other users asking to include more stuff in file names (ranging from sort titles to chapter/collection references…